Love the bullet-hellness! Controls feel good, and enemy and bullet paths are smooth. As an improvement, I would look for a less intrusive way of showing remaining lives, they hide my avatar! Overall very enjoyable :)

My deepest apologies to every Chrome user, I was not reading the keypresses correctly for your browser. I can now confirm that I managed to get to the end using Chrome 49 on Windows (I still had to click on the game beforehand, did not find a way around that one...).